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Publication Date:
June 2010
ISSN:
1542-6580
DOI:
10.2202/1542-6580.2166

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Hydrodynamic Behaviour and Mass Transfer Performance of SiC Foam

Julien Leveque1 / David Rouzineau2 / Michel Prevost3 / Michel Meyer4

1Institut National Polytechnique de Toulouse, julien.leveque@ensiacet.fr

2Institut National Polytechnique de Toulouse, david.rouzineau@ensiacet.fr

3Institut National Polytechnique de Toulouse, michel.prevost@ensiacet.fr

4Institut National Polytechnique de Toulouse, michel.meyer@ensiacet.fr

Citation Information: International Journal of Chemical Reactor Engineering. Volume 8, Issue 1, Pages –, ISSN (Online) 1542-6580, DOI: 10.2202/1542-6580.2166, June 2010

Publication History:
Published Online:
2010-06-30

This work presents an experimental study of hydrodynamic behaviour and mass transfer performance of ceramic foam (SiC) as column packing. Voidage of the foam studied is of 91% with 640 m2/m3 specific area and 5 PPI. Hydrodynamics experiments are realised with air-water system in counter current in a 150 mm diameter column with a packing height of one meter. Parameters studied are pressure drop for dry and wet packing, flooding and liquid hold-up. Total reflux experiments with n-heptane/cyclohexane mixture were carried out in a distillation column at atmospheric pressure to study mass transfer by determination of HETP (Height Equivalent to Theoretical Plate). The performance in terms of pressure drop per unit height and flooding are quite lower in comparison with classical packings of distillation. The pressure drop obtained is about few millibars per meter (0-10 mbar.m-1) for F-Factor from the range of 0 to 1 and liquid superficial velocities from 1 to 10 m3m-2h-1. Liquid hold-up values, measured in the same range of flow, are in a range of 5 to 10%. The possible application of foam as a packing for distillation is so demonstrated.

Keywords: ceramic foam; distillation; structured packing; pressure drop; mass transfer efficiency

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